基于单相有载调压器的配电网低压治理方法研究  

Research on low voltage control method of distribution network based on single phase on-load voltage regulator

作　　者：张富裕 秦榛 ZHANG Fu-yu;QIN Zhen(Chifeng Power Supply Company of State Power Grid,Chifeng 024000,Chin)

机构地区：[1]国网赤峰供电公司,内蒙古赤峰024000

出　　处：《电子设计工程》2018年第10期189-193,共5页Electronic Design Engineering

摘　　要：为了解决地理位置偏远地区10 k V配电网线路末端电压偏低,严重影响供电电压质量水平,导致电力设备运行效率下降,发电成本上升的问题。文中对10 k V线路末端低电压原因进行分析,并对目前针对10 k V线路末端低电压的解决方法进行对比,提出了采用单相有载调压器来解决10 k V线路末端电压过低的问题。采用单片机通过步进电机来控制调压器分接开关的接入,降低了调压器的故障率,同时增强了调压精度。最后,对赤峰地区10 k V线路安装调压器进行试验。安装调压器后,可实现将线路末端电压从8.5 k V提升至10.5 k V,低压侧电压范围控制在190~220 V之间,有效解决了低电压的问题。此外,降低线路损耗13.545万k Wh,每年节省10.836万元。In order to solve the problem that the voltage at the end of the 10 k V distribution network in remote locations is low,which seriously affects the quality level of the power supply voltage,resulting in the decrease of the operating efficiency of the power equipment and the increase of the cost of power generation,this paper analyzes the causes of the low voltage at the end of the 10 k V line and compare the current solution to the low voltage at the end of the 10 k V line. The single-phase on-load voltage regulator was used to solve the problem of the low voltage at the end of the 10 k V line. The single chip microcomputer was used to control the tap switch access of the voltage regulator through a stepper motor,reducing the failure rate regulator,while enhancing the voltage regulator accuracy. Finally,this paper tests the installation of voltage regulator on 10 k V line in Chifeng district. After the voltage regulator is installed,the terminal voltage of the line can be increased from 8.5 k V to 10.5 k V,and the voltage range of the low voltage side is controlled between 190 V and 220 V,which effectively solves the problem of low voltage. Reduce the line loss of 135,450 k Wh,saving 108,360 yuan a year.

关 键 词：单相有载调压 电压调节器 单片机 步进电机 10 kV配电网线路 

分 类 号：TM721[电气工程—电力系统及自动化]